{"product_id":"tempstar-thermostat-for-teb12r25spa-ptac-control-with-knob-ships-today","title":"Tempstar Thermostat for TEB12R25SPA — PTAC Control with Knob | Ships Today","description":"\u003ch3\u003eOverview\u003c\/h3\u003e\n\u003cp\u003eThis is the OEM PTAC thermostat assembly for the Tempstar TEB12R25SPA packaged terminal unit, including the thermostat control body (part 1058517) and its matching adjustment knob (part 1058437). The thermostat is the temperature-sensing brain of the unit — it reads room temperature, compares it to the dial setpoint, and switches the 24V control circuit to call for cooling, heating, or fan operation. When this component degrades, the unit either loses temperature control entirely or cycles erratically. A worn or cracked knob also makes accurate setpoint selection impossible, which is why the matched knob is included. This is a genuine OEM replacement built to the exact 24V control specification of the original.\u003c\/p\u003e\n\u003ch3\u003eSpecifications\u003c\/h3\u003e\n\u003ctable\u003e\n\u003cthead\u003e\u003ctr\u003e\n\u003cth\u003eSpec\u003c\/th\u003e\n\u003cth\u003eValue\u003c\/th\u003e\n\u003c\/tr\u003e\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003ePart Numbers\u003c\/td\u003e\n\u003ctd\u003e1058517 (thermostat), 1058437 (knob)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eType\u003c\/td\u003e\n\u003ctd\u003ePTAC Mechanical Thermostat\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eBrand\u003c\/td\u003e\n\u003ctd\u003eTempstar (ICP \/ Heil)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eControl Voltage\u003c\/td\u003e\n\u003ctd\u003e24V\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eFitment\u003c\/td\u003e\n\u003ctd\u003eOEM Direct Replacement\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eIncludes\u003c\/td\u003e\n\u003ctd\u003eThermostat body + adjustment knob\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003ch3\u003eCompatibility\u003c\/h3\u003e\n\u003cp\u003eDesigned as a direct fit for the Tempstar TEB12R25SPA PTAC system. The TEB12 platform is shared across ICP, Tempstar, Heil, and Comfortmaker branded packaged terminal units — confirm your part number against the unit before ordering if your model differs.\u003c\/p\u003e\n\u003ch3\u003eInstallation Guide\u003c\/h3\u003e\n\u003col\u003e\n\u003cli\u003e\n\u003cstrong\u003eSafety First\u003c\/strong\u003e — Disconnect power at the unit disconnect and verify zero voltage with a multimeter before touching any wiring.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eAccess\u003c\/strong\u003e — Remove the front grille and service panel to expose the control box.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDocument\u003c\/strong\u003e — Photograph all thermostat wires and terminal positions before disconnecting anything.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eRemove\u003c\/strong\u003e — Pull the old knob, then release the thermostat from its bracket and disconnect the 24V control leads.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eInstall\u003c\/strong\u003e — Mount the new thermostat, reconnect the control leads per your photo, and press on the new knob.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eTest\u003c\/strong\u003e — Restore power and confirm the unit responds to setpoint changes in both heat and cool modes.\u003c\/li\u003e\n\u003c\/ol\u003e\n\u003ch3\u003eSigns You Need a Replacement\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eUnit will not maintain the selected temperature or runs continuously.\u003c\/li\u003e\n\u003cli\u003eNo response when the dial is turned to call for heating or cooling.\u003c\/li\u003e\n\u003cli\u003eCracked, loose, or missing control knob.\u003c\/li\u003e\n\u003cli\u003eErratic short-cycling unrelated to refrigerant or airflow faults.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eShipping \u0026amp; Returns\u003c\/h3\u003e\n\u003cp\u003eShips same day on orders placed before 3 PM CST. 30-day returns on unused parts. Backed by the National HVAC Parts fitment guarantee.\u003c\/p\u003e","brand":"Tempstar","offers":[{"title":"Direct Replacement","offer_id":63021643530611,"sku":"1058437-GEN","price":65.0,"currency_code":"USD","in_stock":true},{"title":"OEM","offer_id":63048489828723,"sku":"1058437","price":84.5,"currency_code":"USD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0984\/1190\/5395\/files\/nhvac-thermostat-nonprogrammable-1058437_5e825b39-0f8e-47b4-b97c-c5e0e9e619dc.jpg?v=1782961410","url":"https:\/\/nationalhvacparts.com\/products\/tempstar-thermostat-for-teb12r25spa-ptac-control-with-knob-ships-today","provider":"National HVAC Parts","version":"1.0","type":"link"}